基于有氢的 melatonin 的 CL 反应,在一个基本碱的答案的过氧化物和钠次氯酸盐(NaOCl ) 被开发的为 melatonin 的决心的一个流动注射化合光(CL ) 方法。可能的 CL 机制被讨论了,并且小径被给那汗衫氧的为反应的一个建议被澄清在这个反应系统被产生并且为 CL 排放负责。在优化条件下面,申请的线性集中范围是 1.0 吗?
A flow-injection chemiluminescence (CL) method for the determination of melatonin based on the CL reaction of melatonin with hydrogen peroxide and sodium hypochlorite (NaOCl) in a basic alkaline solution was developed. The possible CL mechanism has been discussed, and a proposal for the reaction pathway was given that singlet oxygen was clarified to be produced in this reaction system and was responsible for the CL emission. Under the optimized conditions, the linear concentration range of application was 1.0×10^-7-2.5 × 10^-4 moloL-I with a de- tection limit of 5.0 ×10^-8 moloL-1 (S/N= 3). The relative standard deviation for eight repeated measurements of 1.0×10^-6 mol·L^-1 melatonin was 2.8%. The interferences of several important biological substances, some indole compound, cations and anions were studied. No interference was found for the anions, glucose, starch, most of cations and low concentration (less than 3.0 × 10^-6 mol·L^-1) of some biological substances and indole compound. The method was applied to the determination of melatonin in rat pineal gland and drug with satisfactory results. The sample throughput was 90 injections per hour.